/*
 * Copyright 2019 BLK Technologies Limited (web3labs.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */
package io.web3j.libp2p.protocol.muxer

import io.web3j.streammux.MuxedStream

/**
 * Callback interface allowing callers to handle protocol data on a stream.
 * [@see https://github.com/multiformats/go-multistream/blob/master/multistream.go]
 */
interface ProtocolHandler {

    /**
     * Callback function invoked when a protocol ought to be handled.
     * @param protocol the protocol.
     * @param stream the stream containing data for the selected protocol.
     */
    fun handleProtocol(protocol: String, stream: MuxedStream): Unit
}
